Nest Protect

The Nest Protect is a smart smoke detector, designed to detect smoke, heat, and carbon monoxide in your home and alert your smartphone of an emergency in addition to traditional audible and visual alerts.

The Nest Protect automatically integrates with the Nest Learning Thermostat to provide access to its additional sensors.

• Available with 6 AA Energizer Ultimate Lithium batteries or Wired for 120 V
• Wi-Fi connectivity and wireless mesh networking with other Nest units
• Photoelectric smoke sensor and carbon monoxide sensor
• Heat and humidity sensors
• Three activity sensors
• Ambient light sensor

• Wikipedia: Nest Protect
• Nest Labs: Nest Protect